Cargo box



FIG. 1 is a top perspective view of a cargo box showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a side view thereof, the opposite side being identical thereto; and,

FIG. 5 is a top view thereof.

In the drawings, the broken lines depict portions of the article that form no part of the claimed design. 

CLAIM I claim the ornamental design for a cargo box, as shown and described. 